Gardenovothe Garden anew

In 2004, Pure Aqua, Inc. manufactured and supplied an industrial seawater reverse osmosis (RO) system for the Aysir Tourism Resort in Turkey. The system consists of two independent units with a total capacity of400m3per day of product water.

The system consists of two independent units with a total capacity of 400m3per day of product water. Prior toPure Aqua’s involvement, RO pilot installations had been employed on thesite with limited success. Membranes became fouled and/or scaled, and the owners were not convinced that the RO equipment would provide adependable long-term water supply for the property. Shipping potable water by truck became a likely means of supplying the resort.
Background

Because of the Aysir Tourism Resort’s location, city or municipal water was not available. In addition, because of the resort’s close proximity to the sea,well water in the area was 40,000 ppm or more TDS. It was estimated that the resort would need as much as 400 m3per day to meet its potable and irrigation water needs. After careful analysis of the resort’s needs and location, the technical staff of Pure Aqua, Inc., a manufacturer and wholesale distributor of RO systems and components for industrial and commercial applications located in Irvine, California, decided that a seawater RO was the most effective and efficient method of obtaining the quality and quantity of water necessary for the resort’s daily operations.
System & Process

The feed water to the system was supplied from a beach-well with raw water TDS of about 40,000 ppm.The system design was based on high rejection TFC spiral wound membranes with an energy recovery turbine.The seawater RO systems were selected from Pure Aqua’s SWI Series. Each produces 200 m3per day of drinking water with TDS less than 300 mg/L. In addition, Pure Aqua proposed enhancing pretreatment to the RO system. Itwas recommended that chlorine be injected into the feed for disinfection. Acid was then added to lower pH and minimize calcium precipitation. After media filtration, sodium bisulfite was injected to remove residual chlorine, which if present, is harmful to RO membrane elements. Finally,1-2 ppm antiscalant was added to the feed just prior to the cartridge filters on the RO skids.This pretreatment scheme addressed the concerns presented by the feed water analysis and previous pilot tests. It was also proposed that pretreatment equipment functions should be measured / monitored by a touch panel that controlled the RO system.The overall process is briefly described below.
Pretreatment of raw water includes:

-    Chlorination to prevent bacterial growth in piping
-    Acid injection to prevent calcium precipitation
-    Filtration using conventional media filters to reduce suspended solids (SS) to 10-micron size
-    Dechlorination by addition of sodium bisulfite to remove Free Chlorine in the feed water
-    Antiscalant injection to prevent membrane fouling.
The pretreatment was adopted inconjunction with the RO equipment. The seawater RO units consist ofthe following:
-    Feed and backwash pumps
-    5-micron cartridge filters to reduce feed water silt density index (SDI) and to limit the SS to 5-micron size
-    Seawater RO membranes feed high pressure pumps
-    TFC spiral wound membranes to reduce the TDS from 40,000 mg/L to less than 300 mg/L
-    Seawater RO flushing and clean-ing system to maintain the membrane performance
-    Touch-screen programmable logic control-based control panel
-    Energy recovery turbine (recovering up to 35% ofthe energy consumption) and variable frequency drive.
Performance

The desalination plant produces 2 x 200 m3per day of drinking water with TDS less than 300 mg/L from feed water with a TDS of about 40,000 mg/L at temperature range of19 to 27°C.Trials concluded that acid injection could be suspended without affecting the operations of the plant. From its initial start-up in 2004,the plant has been running smoothly with minimal trouble-shooting. As a result, the resort has a reliable and steady supply of potable water at a cost far less than shipping water to the site.

About the Author:

Pure Aqua, Inc. is a leading manufacturer and wholesale distributor of water systems, Reverse Osmosis Systems, water treatment and commercial Water Purification Systems. And offer a wide range of pre-engineered as well as custom engineered solutions for all water purification needs.

Article Source: ArticlesBase.com – Industrial Seawater RO System Aysir Tourism Resort in Turkey

Building a grow room for mother plants _ operational

HM Digital TDS-EZ Meter/Tester, Water/ppm/Purity/Filter $15.98 Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Fun, translucent blue housing that's very strong and durable. Includes a TDS chart sticker on the back of the meter that explains TDS values. Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution i...

TDS Calibration Solution (One Bottle 90ml) $6.75 For use with the HM Digital TDS-EZ, TDS3 & TDS4 Testers or any TDS tester that requires an NaCl calibration solution...

HM Digital TDS-EZ Meter Tester Water/ppm/Purity/Filter $18.95 Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Fun, translucent blue housing that's very strong and durable. Includes a TDS ch...

Taylor Pool & Spa Total Dissolved Solids (TDS) Test Kit 1 Drop = 50 PPM $53.78 Total dissolved solids, generally referred to as TDS, build up in pools over time, making a pool difficult if not impossible to manage and perhaps causing eye irritation. This easy to use test kits allows you to check your pool for TDS for proper total pool water management, and is an absolute must for industry professionals....

Milwaukee Instruments SM802 pH/EC/TDS Combined Meter, Range: 0.00 14.00 pH, 0.00 6.00 mS/cm,0 4000 ppm $199.99 Smart 3-in-1 portable meter1 probe for pH, conductivity and TDS Automatic Temperature Compensation Large and easy to read displayRange0.00 - 14.00 pH 0.00 - 6.00 mS/cm 0 - 4000 ppm Resolution0.10 pH 0.01 µS/cm 10 ppm Accuracy± 0.20 pH 2% full scale 2% full scale TDS ratio0.68CalibrationManual 1 pointTemp. CompensationAutomatic 0 - 50°CElectrodeMA850Battery type/life1 x 9V / 150 hoursEnvironment...

Milwaukee Instruments MA9062 1332 ppm TDS Solution (230ml) $14.71 MA9062 total dissolved solids(TDS) solution is formulated with a range of 1382 ppm, and is available in 230 mL leak proof bottles. The use of calibration solution is fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings of your Milwaukee instruments TDS meter. MA9062 is suitable for use with the following Milwaukee conductivity & TDS meters: SM...

Milwaukee Instruments Mi805 Portable 4-in-1 Meter,pH/EC/TDS/Temp, Range: 0.00 TO 14.00 pH, 0 to 3999 uS/cm ED, 0 to 1999 ppm TDS, 0.0 to 60.0°C / 32.0 to 140.0°F Temp $646.38 Multi-range pH/EC/TDS and Temperature meter- 4-in-1 pH/EC/TDS/Temperature probe- The rugged MA851D/1 probe has been designed for heavy-duty applications (agriculture, industrial, etc.) Range0.00 - 14.00 pH 0 - 3999 µS/cm 0 - 1999 ppm 0.0 - 60.0°C 32.0 - 140.0°FResolution0.01 pH 1 µS/cm 1 ppm 0.1°C 0.1°FAccuracy± 0.01 pH ± 2% Full scale (for EC and TDS) ± 0.5°C ± 1°FTypical EMC Deviatio...

Hanna Instruments HANNA GROCHEK 1500 PPM TDS SOLUTION 20 ML (CASE of 25) MODEL HI 70442P (FULL CASE QUANTITIES ONLY) [716880] Hanna 20 ml Packet Solution HANNA 1500 PPM TDS SOL 20ML 25/CS MSRP: $1.29 each packet...

Economy Portable Conductivity/TDS Meter 0-1990 ppm $81.95 Milwaukee Portable TDS Meter [model SM401] SM401 PORTABLE TDS METER Model SM401 TDS meter - Range: 0.0 - 1990 ppm - with automatic temperature compensation and 1 point manual calibration supplied with MA811D/1 TDS probe, 9v battery, 20ml 1382 ppm packet buffer solution and screwdriver for calibration. Manufacturer's Product Information 2007 MSRP Each $ 101.95...

SMS410 TDS MONITOR 0-1990ppm by Milwaukee $94.95 ...